OH1RF — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Finland Most frequent locator attributed to this token: KP10

Receiver-side FT8 activity involving OH1RF, decoded by SO8OO in southeastern Poland. 221 FT8 messages attributed to this token as transmitter, on 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-10-25 and 2026-10-31.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 221 FT8 messages attributed to OH1RF as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Several six-hour UTC windows tied for the largest share (59%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (72%); the estimated median was -4 dB.

Overview

221
Messages attributed
3
UTC dates decoded
17
Active 15-min windows
-4 dB
Estimated median S/N

Bands

First attributed message: 2026-10-25
Last attributed message: 2026-10-31 06:35 UTC

Observed FT8 message patterns

Attributed sample
221 messages
Active dates
3 UTC dates
Estimated median S/N
-4 dB
Estimated 10th-90th percentile
-13 to +5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 55, strong (≥ -8 dB) 160.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to OH1RF

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator
KP10 · 77 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,177 km (approx.)
Last such locator decoded
2026-10-31 06:07 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTCBandOH1RF S/NCounterpartCounterpart S/NMsgsCapture
10-31 06:34 40m +8 / - F4MXT/P - / -22 2 Partial capture
10-31 06:21 40m +2 / - FK8HC - / -19 12 ✓ Closing fragment
10-31 06:21 40m - / - DH2NJS -10 / - 10 Partial capture
10-31 06:21 40m - / -4 DL8TV +6 / - 2 Partial capture
10-31 06:21 40m - / - F5PBG -12 / - 2 Partial capture
10-31 06:20 40m -8 / - PV8AJ - / -8 2 ✓ Closing fragment
10-31 06:16 40m -8 / - SV9AUP - / -18 6 Partial capture
10-31 06:15 40m -7 / - OK2FKU - / +1 2 Partial capture
10-31 06:13 40m +2 / - IQ0AAI - / -6 2 ✓ Closing fragment
10-31 06:12 40m - / - F5PBG -16 / - 2 Partial capture
10-31 06:07 40m -3 / - EH6DSY - / -13 3 ✓ Closing fragment
10-31 06:01 40m +7 / - SV9AUP - / -15 10 Partial capture
10-31 05:51 40m -2 / - SV9AUP - / -15 10 Partial capture
10-31 05:47 40m +2 / - PY1SX - / -21 2 Partial capture
10-31 05:45 40m +3 / - SV9AUP - / -17 3 Partial capture
10-31 05:43 40m +3 / - TA1MB - / -24 3 Partial capture
10-31 05:34 40m +3 / - HI8WJI - / -25 13 Partial capture
10-31 05:32 40m +4 / - PY2DPM - / -15 4 Partial capture
10-31 05:21 40m -6 / - OA4ENG - / -17 16 Partial capture
10-27 19:29 40m - / - PE1NPS -2 / - 3 Partial capture
10-27 19:28 40m - / -13 F6BHK -12 / - 3 ✓ Closing fragment
10-27 19:25 40m - / -16 M0LUX +8 / - 4 ✓ Closing fragment
10-27 19:18 40m - / - M0LUX 0 / - 6 Partial capture
10-27 19:17 40m - / +4 IN3BFW +7 / - 4 Partial capture
10-27 19:04 40m - / -9 DL7ACA +6 / - 5 ✓ Closing fragment
10-27 19:03 40m -10 / - RZ4FWA - / -7 2 Partial capture
10-27 19:00 40m - / - DL7ACA 0 / - 2 Partial capture
10-27 18:53 40m -11 / - BG5GFU - / -18 5 Partial capture
10-27 18:51 40m -6 / - PH9OY - / +4 4 ✓ Closing fragment
10-27 18:48 40m -6 / -6 5B4AAB -6 / +1 5 ✓ Full exchange observed
10-27 18:45 40m -5 / - DS2MGT - / -16 4 Partial capture
10-27 18:43 40m - / - DL7ACA +9 / - 3 Partial capture
10-27 18:43 40m - / -10 F1PBZ +5 / - 4 Partial capture
10-27 18:30 40m -9 / - IU8UOQ - / -10 13 Partial capture
10-27 18:28 40m -8 / -13 YO4LUP 0 / -9 4 ✓ Full exchange observed
10-27 18:26 40m -7 / -16 ES6DO +1 / -9 5 ✓ Full exchange observed
10-27 18:18 40m -12 / - EP2AES - / - 8 Partial capture
10-27 18:13 40m - / - R2AL -1 / - 4 Partial capture
10-27 18:08 40m - / - F4HES -10 / - 3 Partial capture
10-27 18:04 40m +3 / - HZ1OL - / -4 15 ✓ Closing fragment
10-27 17:51 40m -11 / - 9H4JX - / -7 6 Partial capture
10-26 20:02 40m - / - F5PBG -6 / - 2 Partial capture
10-26 19:50 40m - / - IK0ALT -13 / - 5 Partial capture
10-26 19:35 40m - / -12 GU4WRP -2 / - 2 ✓ Closing fragment
10-25 18:26 40m - / -8 4O4DB -12 / - 2 ✓ Closing fragment
10-25 18:15 40m -10 / -17 E75W -8 / -4 5 ✓ Full exchange observed
10-25 18:13 40m -2 / - R2FDU - / - 2 Partial capture
10-25 18:08 40m -2 / - R2FDU - / - 3 Partial capture
10-25 18:05 40m -4 / - LX1RFJ - / - 4 Partial capture
10-25 18:02 40m -3 / - E75W - / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

40m
UTC    dB Audio  Message
062430  -6 1445  OH1RF DH2NJS JO50
062445  +4  984  FK8HC OH1RF RRR
062500  -5 1445  OH1RF DH2NJS JO50
062515  +2  984  FK8HC OH1RF RRR
062530  -9 1445  OH1RF DH2NJS JO50
062545  -2  984  FK8HC OH1RF RRR
062600 -11 1445  OH1RF DH2NJS JO50
062615  -4  984  FK8HC OH1RF RRR
062630 -14 1445  OH1RF DH2NJS JO50
062645  -1  984  FK8HC OH1RF RRR (x2)
062730  -8 2832  OH1RF DL1BBO JO43
063415 +10  645  F4MXT/P OH1RF -22 (x2)
063515  +6  644  R7RCO/M OH1RF -22

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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